#include <iostream>
#include <string>
#include <cstring>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include "Thread.hpp"

using namespace ThreadModule;

int sockfd = -1;
std::string server_ip;
uint16_t server_port = 0;

void Recv()
{
    while (true)
    {
        char buffer[1024];
        struct sockaddr_in peer;
        socklen_t len = sizeof(peer);
        // 4.收数据
        int m = recvfrom(sockfd, buffer, sizeof(buffer) - 1, 0, (struct sockaddr *)&peer, &len);
        if (m > 0)
        {
            buffer[m] = 0;
            //std::cout << buffer << std::endl;
            std::cerr << buffer << std::endl;
        }
    }
}

void Send()
{
    struct sockaddr_in server;
    memset(&server, 0, sizeof(server));
    server.sin_family = AF_INET;
    server.sin_port = htons(server_port);
    server.sin_addr.s_addr = inet_addr(server_ip.c_str());
    socklen_t len = sizeof(server);
    while (true)
    {
        std::string input;
        std::cout << "Please Enter# ";
        std::getline(std::cin, input);
        // 3.发数据
        ssize_t n = sendto(sockfd, input.c_str(), input.size(), 0, (struct sockaddr *)&server, len);
    }
}

    //./udpclient server_ip server_port
    int main(int argc, char *argv[])
    {
        if (argc != 3)
        {
            std::cerr << "Usage: " << argv[0] << " server_ip server_port" << std::endl;
            return 1;
        }
        server_ip = argv[1];
        server_port = std::stoi(argv[2]);

        sockfd = socket(AF_INET, SOCK_DGRAM, 0);
        if (sockfd < 0)
        {
            std::cerr << "socket error!";
            return 2;
        }

        // 创建线程
        Thread recv(Recv);
        Thread send(Send);

        recv.Start();
        send.Start();

        recv.Join();
        send.Join();

        return 0;
    }